scholarly journals Sensitivity Assessment of the Seismic Response of a Masonry Palace via Non-Linear Static Analysis: A Case Study in L’Aquila (Italy)

2021 ◽  
Vol 6 (1) ◽  
pp. 8
Author(s):  
Ilaria Capanna ◽  
Angelo Aloisio ◽  
Franco Di Fabio ◽  
Massimo Fragiacomo
Keyword(s):  
Mechanical Properties ◽  
Seismic Response ◽  
Static Analysis ◽  
20Th Century ◽  
Seismic Performance ◽  
Mechanical Resistance ◽  
13Th Century ◽  
Sensitivity Assessment ◽  
Non Linear ◽  
Linear Static Analysis

The city of L’Aquila (Italy) includes a significant amount of masonry palaces erected from the middle of the 13th century up to the first half of the 20th century. This paper focuses on the seismic response of a masonry palace built during the first half of the 20th century and characterized by regularity in plan and elevation. The authors investigate the seismic response by varying a suite of modelling parameters that express the actual scatter of the mechanical properties typical of the masonry palaces erected in L’Aquila. The authors discuss the seismic performance exhibited by this building during the 2009 earthquake. Then, they assess the sensitivity of the selected building’s seismic performance via non-linear static analysis to the mechanical properties of masonry, the in-plane stiffness of the floors, and the mechanical resistance of the spandrels. The parametric analysis shows that the three variables markedly affect the shear resistance, the ultimate displacement, and the behavior factors. The fragility functions were then estimated from the results of non-linear static analysis. A significant scatter of the probability of collapse for the considered limit states reveals the limitations of typological approaches for masonry palaces.

Seismic Performance Evolution of Tube-in-Tube Diagrid Structure Using Non Linear Static Analysis

2021 ◽  
Vol 6 (3) ◽  
Author(s):  
M. K. Laghate ◽  
M. K. Laghate
Keyword(s):  
Static Analysis ◽  
Seismic Performance ◽  
Lateral Displacement ◽  
Pushover Analysis ◽  
Lateral Load ◽  
High Rise ◽  
Load Carrying ◽  
Non Linear ◽  
Diagrid Structure ◽  
Linear Static Analysis

Diagrid structures are evolved as one of the best structural system for high rise buildings. In this study seismic performance of 36 stories Tube-in-Tube Diagrid Structure with various diagonal slopes is evaluated by Non Linear Static Analysis. Tube-in-Tube diagrid structures are modified Diagrid structures in which gravity core is replaced with Diagrid core. Single tube diagrid structure is also studied for comparison. The structure is pushed gradually proportional to fundamental Mode shape. The analysis results shows that Tube-in-Tube structure possess higher stiffness and Lateral Load resisting capacity. The pushover analysis demonstrates that diagrid core can perform better by hardening the structure. According to analysis results, the Tube-in-Tube diagrid structure shows higher non-linear lateral displacement. It was observed that as the diagrid angle increases the stiffness and lateral load carrying strength decreases.

scholarly journals Influence of mechanical parameters on non-linear static analysis of masonry buildings: a relevant case-study

2018 ◽  
Vol 11 ◽  
pp. 331-338 ◽  
Author(s):  
Pietro Croce ◽  
Maria Luisa Beconcini ◽  
Paolo Formichi ◽  
Paolo Cioni ◽  
Filippo Landi ◽  
...  
Keyword(s):  
Static Analysis ◽  
Masonry Buildings ◽  
Mechanical Parameters ◽  
Relevant Case ◽  
Non Linear ◽  
Linear Static Analysis

scholarly journals Response Reduction Factor for Lateral Load Resisting Frames with Vertical Discontinuity of Asymmetrical Structure

2021 ◽  
Vol 1197 (1) ◽  
pp. 012005
Author(s):  
Trupti Dongare ◽  
Preeti Kulkarni
Keyword(s):  
Static Analysis ◽  
Reduction Factor ◽  
Soil Conditions ◽  
Response Reduction Factor ◽  
R Factor ◽  
Lateral Forces ◽  
Asymmetrical Structure ◽  
Non Linear ◽  
Wall System ◽  
Linear Static Analysis

Abstract In recent times, the RC building construction with vertical discontinuity that is floating column structures are unavoidable feature and increases trends day by day. To reduce lateral forces the earthquake resistance structures are designed so the response reduction factor (R) is used to determine these lateral forces by using base shear values. The R factor depends upon the overstrength factor, ductility factor, redundancy factor also the sizes of columns, types of soil, zones and load transferring path, etc. The IS code provides response reduction factor only for OMRF and SMRF along with other structures like Braced frame system, Structural wall system, Dual system, Flat slab structure wall system, etc. so there are no codal provisions for floating column structures. Thus it is essential to study the real behaviours of RC buildings with discontinuity in load transferring path through non-linear static analysis, so the present research work is done on trying to find R factor for vertical discontinuous asymmetrical structure for different soil conditions and different positions of floating column using moment resisting frames. And the structure is analyzed by response spectrum analysis and non-linear static analysis using SAP2000 software.

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